Improvement in door-holding devices



0. DORSEY.- Door-Holding Device.

No; 210,764, 'Pate nted DBC.10,-4878= Unrrnn STATES PA'I'EN FFIGE.

OSBOURN DORSEY, OF \VASHINGrTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN DOOR-HOLDING DEVlCES.

Specification forming part of Letters Patent No. 210,764, dated December10, 1878 application filed June 8, 1878.

To all whom it may concern:

Be it known that I, OsBoUnN DoRsnY, of Washington, in the county ofWVashington and District of Columbia, have invented certain new anduseful Improvements in Door Holdin g Devices; and I do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to which it appertains tomake and use the same, reference being bad to the accompanying drawings,which form a part of this specification, and in which-- Figure l is aview showing my improved door-holding device as applied for use. Fig. 2is a plan view, partly in sect-ion, of my improvement; and Figs. 3, 4,and 5 are detail views thereof.

Corresponding parts in the several figures are denoted by like letters.

This invention relates to certain improvements in door-holding devicesfor securing it (the door) open at any desired angle, and by which thereis no possible chance of its being forced to by the draft or othercause, to prevent its accidental slapping and risking the breaking ofthe glass therein, with which it is very common to provide doors, asinstanced in inner hallway-doors and store and office doors.

To these endsit consists, first, in the employment, in connection with arod or bar pivoted or hinged to the door-casin g or other desired point,and a slide, of a toothed lever connecting with the knob-spindle;secondly, in providin g the slide-holding pin with an elongated slot,which permits the pin to fall by gravity into the coincident notch inthe slide inclosed in a case having a tubular shoulder, the said slotreceiving a transverse pin from the operating lever thirdly, inproviding the knob-spindle of the door with a slotted collar or sleeve,which receives a projection from the said spindle, and is connected withan arm pivoted to a lever carrying the retaining-pin of the notchedslide of the holding device; fourthly, in the employment, in connectionwith the operating-lever having the slideholding pin, of a propping-lever, substantially as hereinafter more fully set forth.

In the drawing, A refers to a case or cap, open at both ends, andsecured to the door by screws orotherwise, which screws pass throughapertured feet or plates a a, cast with or attached to said case. B is abar sliding through, and confined to the door by, the case A. To therear end of this bar is connected or pinned arod, 0, in turn pinned orhinged to the doorframe, or rather having its pin, which assumes theshape of an axis, bearing in perforated parallel studs or plates b b,fastened or cast upon a base-plate, I), screwed or otherwise secured tosaid frame. Around the projecting portions of the axis of the rod O iscoiled a spring or springs, c, as seen in Fig. 1, by which, when the barB is free to slide, upon opening the door, the latter will beautomatically closed.

D is a bell-crank lever, pivoted at about midway its length to the door.One end of this crank-lever D is pivoted to an arm, d, of a sleeve orcollar, E, upon the knob-spindle, which is provided with a projection,e, preferably in the form of a headed screw-bolt, enter ing a slot, f,in the knob-spindle collar E. This slot permits of the turning of theknob and its spindle sufficiently to withdraw the latch-bolt in openingthe door without interfering with the holding device when it may may notbe desired to use it, in which instance the crank or holding deviceoperating lever D is locked in position. The other end of the lever D isprovided with a vertical pin, g, and when the said pin is depressedrests upon a tubular stud or projection, h, of the case A. This end ofthe lever D is recessed, as seen in Fig. 3, and passing through saidrecess, and secured in said end of lever, is a pin, i, same figure, uponwhich the holding device pin g is hung, and susceptible of a limitedvertical movement thereon by means of a slot, 3', the object of which isto permit of the pin 9 falling by gravity into its notch in the bar orslide B when that end of the lever D is depressed, and thus lock saidslide in a fixed position to hold the door open at the desired point orangle in creating a'draft through the room or house. The slide or bar Bis provided with a series of notches, designated by the letters 10' k,to receive the pin 9 as the door is set nearer to or farther from thejamb, or as the opening between the latter and the door is varied, theslide B receiving its movement from the rod 0.

It will be observed that, upon turning the knob to open the door, itwill elevate and disengage the pin g of the crank-lever D from itsnotch-in the slide or bar B, and as the door continues opening the saidbar will be slid forward; and after the openin g of the door to thedesired point, if it is desired to hold or secure it, the releasing ofthe knob will allow the outer end of the lever D to be depressed and itspin 9 to fall into the coincident notch 7c in the slide B, and thusobtain the desired result, the securing of the door, to prevent itsbeing blown to and slammed by the draft, which slamming risks, and notunfrequently results in, the smashing or breaking of the glass in thedoor,

with which it is common to provide inner halldoors and store and officedoors.

A reverse movement of the knob by thehand is the only means by which theretaining or holding pin 9 can be retracted or disengaged from theholding-bar 13, thus preventing any possibility of the accidentalslamming or closing of the door.

By providing the collar E or latch-knob with a securing device the pin 9will serve as alock to prevent the opening of the door.

A lever or prop, l, pivoted to the case A, serves to prop the outer endof the lever D and its pin 9 in an elevated position, as shown in Fig.5,whentheholding deviceis not needed or the weather may be too coolforthe holding of the door open.

Having thus fully described my invention,

I claim and desire to secure by Letters Patent of the United States 1.In a door-holding device, the combination, with a 'rod, 0, hinged orpivoted to the doorcasing or structure, of a slide, B, and lever D,having a pin, g, engaging said slide, and provided with a pivoted arm,cl, connecting with the knob-spindle of the door by a sleeve or collar,E, substantially as and for the purpose set forth.

2. In a door-holding device, itslever D, provided with a transverse pin,z, and the pin g, having a slot, j, in combination Withthe notched slideB and case A, having the tubular shoulder h, substantially as and forthe purpose specified.

3. The knob-spindle collar E, having the slot f, in combination with thesaid spindle having a projection, e, and arm d, connected to the lever Dof the door-holdin g device, substantially as and for the purpose setforth.

4. The combination, with the lever D, having the pin g, of thepropping-lever 1, substantially as and for the purpose specified.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

\ OSBOURN DORSEY.

Witnesses J NO. W. MADIGAN, AUeUs'r Pn'rnnsoniv.

